10 hectometers
One hectometer is 100 meters in length already, so 10 is 1000
Answer:
scientists have managed to capture atoms in the act of forming and breaking bonds, using transmission electron microscopy (TEM). In TEM imaging, a high energy beam of electrons is used to visualize a surface and create an impression of it digitally.
Explanation:
Hope this helps :)
Answer:The copper chloride did not fully dissolve in water before performing the reaction.
The mass of the copper was not measured with the same accuracy.
Not all of the copper was collected in the filter.
Not enough time was allowed for all of the aluminum to react.
There were impurities in the aluminum.
Redox reaction is the chemical reaction in which both oxidation (loss of electrons) and reduction (gain of electrons) takes place or transfer of electrons between two species occurs.
The given chemical equation is :
Here, in reactant side, the oxidation state of zinc is zero (0), after reacting with hydrogen chloride, the oxidation sate of zinc becomes two (+2). In this reaction, electrons are transferred from zinc atoms to the hydrogen atoms. Thus, zinc is oxidized by losing electrons.
Hence, oxidation state of zinc increases due to loses electrons i.e. Option (A) is correct.